Janice L. Bishop is a senior research scientist at the SETI Institute, where she is Chair of Astrobiology and on the Science Council. She investigates Mars surface composition, mineral spectroscopy, and volcanic alteration, and has worked with data from many martian missions, including MRO/CRISM for which she is a Co-I. She has served as Editor for Icarus and special issues in American Mineralogist and Clay Minerals. She has received awards from the Clay Minerals Society, the Humboldt Foundation and the Helmholtz Foundation, and is a Geological Society of America (GSA) Fellow. Jim Bell is a professor at Arizona State University, where he specializes in astronomy and planetary science. He studies the geology, geochemistry and mineralogy of Solar System objects using telescopes and spacecraft. He received the Carl Sagan Medal from the American Astronomical Society for excellence in public communication in the planetary sciences, and asteroid 8146 Jimbell was named after him by the IAU. He edited The Martian Surface: Composition, Mineralogy and Physical Properties (Cambridge, 2008) and co-edited Asteroid Rendezvous (Cambridge, 2002). Jeffrey E. Moersch is Professor of Earth and Planetary Sciences at the University of Tennessee. His research focuses on the geology of planetary surfaces, remote sensing, terrestrial analog field work, and planetary instrument development. He has extensive spacecraft mission experience, including work as a member of the science teams of the Mars Exploration Rover mission, the Mars Odyssey mission, and the Mars Science Laboratory mission. He has conducted astrobiology-related research in many terrestrial analog field sites, including Death Valley and the Mojave Desert, the Atacama Desert, the Andes and the Arctic. From 2010 to 2015 he was the Mars Editor for Icarus.